The 27-year-old stars as Karen in the Broadway-focused drama, in which she’s vying for the the part of Marilyn Monroe in a new musical. Last week, fans saw what rival Ivy (played by Megan Hilty) has to offer the project, and now it’s Karen’s time to shine.

In the video, McPhee performs the original song ’20th Century Fox Mambo,’ beginning in a rehearsal space. Backed by talented dancers and impeccable choreography, Karen is at the center of it all while singing the uptempo tune. Midway through the performance, the aspiring actress is transformed into Marilyn, and continues to sing as if she’s on stage.

The clip is taken from the second episode of the highly anticipated series, which debuted last week. ‘The Callback’ shows Ivy and Karen going to great lengths to prove they’re the perfect Marilyn, while Eileen (Anjelica Huston) fights to finance the new musical in the midst of a nasty divorce. The new episode of ‘Smash’ airs on Monday, Feb. 13 at 10PM ET on NBC.

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